Engine.



l. VAN KEUREN.

LNGQNB APPLHJAHCH HLED 1AN.23. x913 Patented Feb. 1916.

2 SHEETS SHEET I.

I II

A ITO/WE).

H. P. T: VAN KEUREN.

ENGINE.

APPLICAHON FILED JAN! Patented Fe b.

2 SHEETS-SHEI1F 2.

ATTORNEY.

. Uivrrsp srl Tiis 'is str G F Q HENRY-P. rivaiv KEUBEN, or LANSING; mien-1min.

ENGINE.

To all. whom) it may concern 7 j knOWnJthat I; H NRRP. T. VAN

' K Uirnm'a citizenv of the United States, re-

siding at Lansing, county of Ingharn, State ofMichigan; have invented anew and usefill Engine, of which the following is a specification.

My invention relates to improvements in. internal combustion engines. I

The object is'to provide improved valve control between the engine cylinders and the intalce end the exhaust manifolds.

The. invention also comprises improve- HlGl 1l;-S il1 cylinder and crank case construction,;i nipro\-'ements in cooling methods both by iiir and water, improvements in the valve oiling -.system,, improvements in rnagneto drive andqi-n other rle-tail'sot construction.

All theforegoing.improvements are intended more especially "for theff-"foui'-cycle,

: i'niilti;cylinder ga'solene engines such as are used. heth'in-ipleasure and commercial veh-ie cles, nautical and-=aeronautical craft; The

,i'nighghowever, advantageously :eniploy .some of the principles lieieiiiset forthand larger gas engines o-f'tlie stationary type or the-:heavier o i-laengirresof; larger crait ibis-believed that;someof ithern are peculia'rly adapted to "the typcs'an'd sizes of enginessiich asare used in submarine vessels. 'Referring'to the drawings: Figure 1 is a partial side elevation andvertical longitudinal niir t'i on'of af-our-cylinder, four" cv gas ie au'toniobile engine con in :ordi iceivith my invention. 2 is a vertical section on line 2-2 of Fig. 3 is a vertical section on line 3 of Fig.- 1} .Si'niilar numerals refer .to similz r parts throughout the several views. l

In the. construction shown .in the drawings," whichjare illustrative, nierely'hy way of example, of apreferred ei'iiliodi nent of 'era,ll v. with recesses 7 forming passageways myi'riveiition, the cylinders 5 arelsevered by the -.l0l}iillllf valve 6.v This valve is .in the fornrof a hollow shaft giiidis provided at intervals bothlongitudiniilly and periphfor thegas and theexhaust at proper intervals i n theoperation of the engine, as shown and described in my copending application Serial No. 713,998 filed -August 8, 1912. Each cylinder 5, whether air or water cooled is suspended upon the valve member Brackets ii are rigidly mn ced wr made a part of the crankcase 13, so that th distarice from the axis of the crank'to the,

axis of the rotary valve fieis fixed. 'At'the loiver ends; of cylinders 5 there is provided a ground or close fitting sliding' joint 14:

between each cylinder and the crank case.-

relative vertical movement between .the' 'cyltheir suspension from the valve 6. Hencecompression or explosion pressures tend to iniwe. the cylinders vertically upward just as the same pressures force the pistons 15'.

Specification of Letters Patent. Pgi3euted Feb 22 1916 7 I Application filedlanuary 23,1913. Serial'No. 743,705. I

vertically downward. This reectioii' isex erted upon. the valve and since-the valve is rotatin' co cylinders he so prop" rtioned 'thatft'he iinit bearing-1 nstantly, the. beaqiigarea of the.

pcnthe valve lmi'is't necessarily? pressures are ivitliin'ffe asihleworking limit The valve is in turn-restrained braelre l1 and thus, 't-lirough'thebracket ths'cyiinder reaction: are,"transmitted-toithe crank Casewhich carries the crank slieft h. ear-i in zs 9. i p l, e

The oh ect-of the suspension the cylin} dcrs in the foregoing manner 1S two old.

First, during the compression and expansion strol'zes when the-cylindersare forced upward against the valve," gas-tightness is secured-and there can be no leakage of gas around the valve. Second, when thecylinders heat up, more especially in the air cooled 395, the expansion of the metal becomes appreciableand since the cylinders are fixed or supported at the valve, changes in length must occur in directions. away from' the valve and c'an'in no way interfere 'with the operationof the valve.

In the type of engine shown,- the cooling is accomplished by :means of the natural circulation of water. No pump. is used.

This system is popularly termed the thermosiphon. Cooling water is sup'plied to jackets 16. through inlet opening 33, froinpipe 34 which is secured to the cylinders by bolts 35. It will be noted ;tha't watc'r;jacltets 1G I surround the valve shaft at'the top and thereby serve efficiently to cool the same.

W'ater from pipe 34 is also admitted to'the interior of valve 6, at the rei r end, and flows out at the front and through pipe 10 which communicates with: pipe'3G extending across the tops of the cylinders and receiving, through nozzles 42, the water from the tops or jackets 16.

The rotation of the valve and consequent agitation of the water within it will aid the 5 fiow. Where the exterior surface of the valve is cooled from the water in jackets '16,

it may be founclthat the interior of. valve .6

will require no water cooling, in which case vthe valve will simply be open at the ends for! the access of aira Referring especially to Fig. 2/, gas is sup plied from c-arbureterQTthrough passage 39 and intake opening in the cylinder wall to the interior of the cylinder, upon the registering of recess 7 of valve 6 with opening 28 and opening 29 in the cylinder head.- Upon the registering at the proper interval in the operation of the engine, of recess 7 i with exhaust30 in the cylinder wall-and said '20 opening 29, the exhaust gases are passed from the interior of- 'the-cylinder, through passage and. intoexhau'st pipe 31 which is secured by bolts 43 to cylinders The offset -32 to rec'ss'T-of valve 6 and the auxiliary 25 air inlet 8 through the top wall of the cylinder are designed to prevent-the trapping of gas within recess 7,iall as clearly shown and described in my said copending application.

1 "Ifhe passages ateach of the journals 1-2 30jand the communicating spirally disposed joil-groovesBS in the outer surface of valve 6, afl'ord means for the lubrication of the valveshatt. Means for reducing the pressure within the crank case, beneath the pis 5 ton, are indicated by breather 41f Icp'refer to, drive'the valve at half the l 0f h Clank sl aft 'in the construction show :andby means "for example, of chain l 7-*andsprocketsvf8 ancl 1'9 secured respec tively to crank shaft, and valve shaft (3.

Since the'center to' center distance of valve and crank shaft is rather great and means must be employed to take out the slack in chain 17, I utilize a pinion 20 carried in an 45 eccentric bushing 21 and bearing upon the chain, for this purpose. The pinion and its [shaft are thus capable of sufficient movement to render the chain taut. The pinion 20 is keyed to shaft and said shaft is connected Q 0. to t-he shaft which drives the magneto 24;

and the oil pump 25, in such a manner that the eccentric adjustment of the pinion shaft will not interfere with the operation of the magneto. shaft.

[It'should be noted that the cylinders do i not necessarily have to be cast singly. They may be cast in pairs or art-bloc even, provid'ed the proper journal area is obtained in the supporting brackets. By such casting in pairs or owl/lac a considerable reduction "in manufacturing cost. may be obtained It r will also'be noted that the intake and exhaust manifolds may be integral parts of the cylinder casting and that, if desired, the valve shaft may be carried by ball or roller tudinal' axis relativ'el for comprising a 1 bearings-in brackets 11: with a consequent reduction in friction.

What I claim is:

1.. In an engine, the combination of a valve shaft and a cylinder supported there by and capable of a slight relative movement. at an angle thereto.

In an engine, the combination ,of a

valve shaft, a crank ,case, and a cylmder between the valve shaft 'and the crank "case, i said cylinder having a-- close ground oint fit with the crank case to permit a slight relative movemrsit between icylinder and crankcase. I c 1 3. Iii an engine, tl1E-C( Iilil )l!l2\tl0ll of a rotating valve, saidvalve having a fixed longit0 the axis of'tlie crank shaft, a cy'l'in rfsi'ispendied on the valve and a piston ti {1 the cylinder, the

cylinder being capabl in line with the inoi at. The combinatlo engine cylinders of slight movement g valve member and brackets between 'alve member and the crank case of the-engine. H

5. In an engine, the 'bina'tion of a rotating valve member, Ia-pli'ii'ality-of cylinders suspended .thereo id hraokets between the valve member l the ciank case of the engine, said bracke ifmingjom'nal bearings for the'valve m'ei beihatiiffixcd,

distance from thecr'anlc is 1 I 6. In' an engine,. tlie vco ibination of an neinbegja cyl- "11d" p tovidcd I alvcinternallytluid-coole l inder suspended the;- with a -\vat'e member. a

7. The rcom in ation of a" rotary member, an engine cylinder i ler? lg a u jacket c:ist'in't' egi:il there thand having a cylinder portj iand valve-so t" capableof seating on the rotary valve e'inbe r,- said cylinder suspended upon said valve menibcr.

the

8. The combination of engine cylinders 7 cast integralwith \"Vahl." jackets, a rotary valve mom )er {jam-natal in the licads ot said cylinders and suppm-ting 'v tlie saincr fixed journal bearingsextc'rior said cvlindcr plurality of' cylinders, of a cm'ipcrating valve shaft, jackets about. the cylinders, and journal bearings for the valve shaft between the cylinders and outside the jackets.

11. In an engine, the combination of a fixed casing, a plurality of cylinders capable i no 1.. movement thrrein. a

cy in;

1h 1m, n'nuled m the heads 0 the ntrnlhng the int a th ik-wd of pres- 7 1 her hearings fur the vulwswshuft Jet mice from the crank shaft, :1 zgder 2 ded from and .11 aft.

suppurt gr a fixed dust miatin 30 sans zit. 5. 31s my? ports.

b3 In the co" ymg coohng the. valve "Film? .i 3 l t a S 1. .l n b. .l l 1.. mu... 7 C 1! H .t l .1 If a l 0 n n .I t n n an 1 1 

